Did I say no one had a better voice that Louis Armstrong?
How about Ella Fitzgerald?
Have Yourself a Merry Little Christmas, Ella Fitzgerald
Seriously, though, have your ever read the original lyrics intended for Judy Garland? The song writers had to make it less depressing. Frank Sinatra even had the writer change the lyrics. But when Ella sings about muddling through, you want to get through it together, with her.
Words and Feathers 